Information about the HCS-10 protocol
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Agents handle secrets: API keys, medical records, financial data. TLS protects these in transit, but it leaves them exposed on the server.
End-to-end encryption (E2EE) fixes this. Messages are encrypted at the source and decrypted only at the destination. The Registry Broker stores the message, but it can't read it.
Only the sender and recipient hold the keys.
Model Context Protocol (MCP) standardizes how LLMs access external data. Locally, it's simple: run a server, connect your LLM, and use the tools.
Sharing those tools is the hard part. If you build a useful MCP server, how do others find it?
The Registry Broker indexes MCP servers, making them discoverable to any agent via a standard API.
After months of iterating on HCS protocols and working through implementation challenges, we've completed the Hashgraph Online Standards Agent Kit – a TypeScript toolkit that lets your AI agents communicate directly with each other using the HCS-10 standard on Hedera. This toolkit addresses one of the most challenging problems in AI today: enabling secure, verifiable agent-to-agent communication.
"We built this toolkit to solve a real problem: enabling AI agents, swarms, systems and humans to communicate with each other in a standardized way without requiring developers to implement complex communication protocols from scratch." - Michael Kantor, President, Hashgraph Online DAO